Use setup julia v2 in CI (#424)

This will avoid hard-coding to v2.2 and will fetch upgrades.

Author: jishnub

.github/workflows/ci.yml

@@ -46,7 +46,7 @@ jobs:
           - x64
     steps:
       - uses: actions/checkout@v4
-      - uses: julia-actions/setup-julia@v2.2
+      - uses: julia-actions/setup-julia@v2
         with:
           version: ${{ matrix.version }}
           arch: ${{ matrix.arch }}